# Relationship history for MSHA mine 1102876

Current hierarchy: **Karen  O'Neil → Big O Inc → Perrysville Sand & Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** O'Neil Brothers Construction Company Inc → Perrysville Sand & Gravel; 1988-10-01 to 2005-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Karen  O'Neil → Perrysville Sand & Gravel; 1988-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karen  O'Neil → O'Neil Brothers Construction Company Inc; 1988-10-01 to 2005-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Karen  O'Neil → Perrysville Sand & Gravel; 1997-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big O Inc → Perrysville Sand & Gravel; 2005-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karen  O'Neil → Big O Inc; 2005-05-01 to current/open; source msha-controller-operator-history